199×6＋4×997－19975s4S-h1A*x2u0~,C,L
算式：提示-O:F-S6Z'U+z5s4S-h1A*x2u0~,C,L
=3C2i2a7N,m8d6U-e2p+g.p5s4S-h1A*x2u0~,C,L